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Abstract

We present wideband of 1180-2100 nm, flatly broadened supercontinuum (SC) generation using highly nonlinear hybrid fibers and femtosecond fiber laser. Stable and smooth spectra without fine structure are demonstrated. The hybrid fibers are constructed by fusion splicing fibers with different properties. The SC spectra can be properly controlled by the optimal design of the hybrid fiber based on the numerical analysis. The generated SC pulse shows the low relative intensity noise (RIN).

Figures (10)

Numerically calculated spectrogram, spectrum, and temporal waveform for the SC pulse generated in the 10-m-long HNL-DSF when the 100 fs pulse with 2.5 kW peak power is launched into the zero-dispersion wavelength of the fiber.

Numerically calculated spectrogram at the output of the (a) high-power soliton pulse generator, (b) HNL-DSF, and (c) N-HNLF when the soliton pulse with 5.8 kW peak power at 1680 nm is launched into the two-stages hybrid fiber.